Question

What was the apparent weight of a 75 kg astronaut during takeoff?

A) 750 N
B) 375 N
C) 150 N
D) 0 N

Answer 1

The apparent weight of an astronaut with a mass of 75 kg during takeoff, when exposed to Earth's standard gravity, is 750 N, calculated by multiplying the mass by gravitational acceleration (75 kg × 9.8 m/s²).

Step-by-step explanation:

The question asks for the apparent weight of an astronaut during takeoff, presuming a standard Earth gravity situation. The astronaut's mass is given as 75 kg. To find the apparent weight, which is the force due to gravity acting on the mass of the astronaut, we can use the formula weight = mass × gravitational acceleration (where the standard Earth gravitational acceleration g is approximately 9.8 m/s²).

Thus, the weight of the astronaut would be calculated as follows:

1. Multiply the astronaut's mass by Earth's gravitational acceleration: 75 kg × 9.8 m/s².
2. This results in an apparent weight of 735 N (rounded to two significant figures).

Since the weight is close to 750 N, the correct answer is A) 750 N, considering the options available and rounding to the nearest answer choice.